Synthesis and characterization of luminescent copolyethers with alternate stilbene derivatives and aromatic 1,3,4-oxadiazoles

Yun Chen, Chi Kuei Liao, Tzi Yi Wu

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23 Citations (Scopus)

Abstract

New copoly(aryl ether)s containing alternate stilbene (P1), distyrylbenzene (P2), or distyrylstilbene (P3) chromophores and aromatic 1,3,4-oxadiazole were prepared by nucleophilic polycondensation. The copolyethers are basically amorphous materials with decomposition temperature greater than 250°C. Introduction of side hexyloxy groups to distyrylbenzene chromophores in P2 significantly enhanced its solubility in common organic solvents such as toluene, THF, and chloroform. UV/visible and fluorescence spectrometers were employed to investigate their optical properties both in solution and in film state, whereas cyclic voltammograms were used to estimate their band diagrams. Photoluminescence maxima of P1, P2 and P3 are 442, 540 and 528 nm, respectively. Oxadiazole chromophores in backbone enhance electron affinity, whereas pendant hexyloxy groups decrease ionization potential. The threshold voltage and luminance of ITO/P2 (100 nm)/A1 single layer device are 17 V and 950 cd/m2, respectively.

Original languageEnglish
Pages (from-to)4545-4555
Number of pages11
Journalpolymer
Volume43
Issue number17
DOIs
Publication statusPublished - 2002 Jun 25

All Science Journal Classification (ASJC) codes

  • Organic Chemistry
  • Polymers and Plastics
  • Materials Chemistry

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